So I was bored tonight and chatting with a friend, and decided to move one of my v001 in progress glitch shaders to iChat under Leopard. Quartz Composers new GLSL compatibility makes this essentially a copy and paste operation. Oddly, it seems sampler2DRect/texture2DRect is a no go with the GLSLGrid rendering destination, just FYI.

Ive also included a background subtraction version, where only the foreground is glitched